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1、1,积累公差和几何公差,2,什么是积累公差？,10.05,槽宽的最小值 W,W=1.05 x 5=5.25?,3,什么是公差？,图纸公差设计要求值,；图纸公差大的情况下,；图纸公差小的情况下,实际零件可以用更小的偏差进行制作,实际零件可全数检查选择分类,和的积累公差不同,4,公差的公差范围为的情况下,前提条件零件的尺寸偏差正态分布母集合,N块板的标准偏差,板的标准偏差,积累公差（）,前面的板的问题积累公差,SRSS(Square Root Sum of Squares),5,不能保证正态分布的情况下,前提条件虽不能保证正态分布，但在公差范围内,W=k(Wi2),W:积累公差：零件公差：系数Wi
2、max:零件公差的最大值,k,=2Wi（Wimax+Wi）,同样公差的零件有N个的情况下,W=k Wi(n)k=2n(1+n),前面的板的问题5=0.186（0.186）,6,系数K的值,零件个数,有着同样公差的零件的积累公差系数,零件的公差的差若大的情况下，接近1.0。变速箱的设计以K=1.5来计算,7,积累公差计算EXCEL,1ST SPEED GEAR END PLAY,零件名称,图纸尺寸,中间尺寸公差,尺寸,公差上限值,公差下限值,中间尺寸,公差,OUTPUT SHAFT,29,0.05,0,29.025,0.025,HUB 1-2,1.9,0.03,-0.03,1.900,0.030
3、,SNAP RING,0,0.05,0,0.025,0.025,GEAR 1ST,-30.8,0,-0.05,-30.775,0.025,合,SRSS,0.175,0.079,計,积累公差,0.105,判定,(0.05),8,计算例,隙間,间隙,29,+0.05 0,1.9,0.03,30.8,0-0.05,选择调整00.05,9,计算问题,隙間,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,選択調整00.05,3,0-0.2,1.45,0.1,25.4,10.4,0-0.05,20.3,0.04,0-0.05,25.4,0-0.05,19.3,0.04,1.45,0.
4、1,0-0.2,3,17.6,0-0.1,3档,4档,10,计算问题演练,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,選択調整00.05,零件名称,图纸尺寸,尺寸,公差上限值,公差下限值,中间尺寸,积累公差,11,间隙调整,隙間,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,選択調整00.05,:SPACER厚度：SPACER公差:空间s：调整间隙n:SPACER个数,n=(Tmax Tmin)/(Smax-Smin-2t)n为整数，计算必要的个数和厚度,12,计算问题解答,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,
5、選択調整00.05,13,间隙调整,隙間,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,選択調整00.05,SIM是施加0.050.12 BRG预紧力进行调整,24,0.05,119,0.05,12.558,+0.2 0,12.558,+0.2 0,102.88,0.03,SIM,CASE BRG孔深度240.05HOUSING孔深度1190.05BRG组装宽度12.558+0.2,0DIFF CASE宽102.880.03,14,间隙调整,隙間,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,選択調整00.05,15,形位公差（几何公差）的种类,
6、29,+0.05 0,1.9,0.03,30.8,選択調整00.05,16,形位公差（几何公差）的种类,29,1.9,0.03,30.8,選択調整00.05,17,形位公差（几何公差）的种类,29,1.9,0.03,30.8,18,直线度,29,1.9,0.03,30.8,19,平面度,29,1.9,0.03,30.8,20,圆度,29,1.9,0.03,30.8,21,圆柱度,29,1.9,0.03,30.8,22,线轮廓度,29,1.9,0.03,30.8,23,面轮廓度,29,1.9,0.03,30.8,24,平行度,29,1.9,0.03,30.8,25,平行度,29,1.9,0.03
7、,30.8,26,平行度,29,1.9,0.03,30.8,27,垂直度,29,1.9,0.03,30.8,28,倾斜度,29,1.9,0.03,30.8,29,倾斜度,29,1.9,0.03,30.8,30,位置度,29,1.9,0.03,30.8,31,同轴度,29,1.9,0.03,30.8,32,同心度,29,1.9,0.03,30.8,33,圆周跳动公差,29,1.9,0.03,30.8,34,全跳动公差,29,1.9,0.03,30.8,35,最大实体公差,29,1.9,30.8,为了方便零件制作的公差也称作BONUS公差,20,0,-0.1,0.2,20.2,若为20，垂直度为0.2若为19.9，垂直度也可以是0.3,36,问题,29,1.9,30.8,这个最大实体公差是什么意思？,12,0,-0.2,
